10x+3y=43
-9x-y=-20
From second equation,
y=-9x+20
Substitute third equation into first equation,
10x+3(-9x+20)=43
10x-27x+60=43
-17x=43-60
-17x=-17
x=1
y= -9+20= 11
Option B
Answer:
good question add 17+10+12
Step-by-step explanation:
Answer:
1) Yes
2) No
3) Yes
4) No
5) No
6) Yes
7) Yes
8) No
Step-by-step explanation:
Each equation must be increasing or decreasing by a constant amount in order for it to be linear. Graphing these equations, you can see that the linear equations will be a straight line.
The total cost of the bracelet will be $96.
The number of charms will be 2.
Step-by-step explanation:
Given,
Cost per charm at Dayton Fine Jewelry = $17
Cost of bracelet = $62
Let,
x be the number of charms
y be the total cost
y = 17x+62 Eqn 1
Cost per charm at Cain Jewelers = $18
Cost of bracelet = $60
y = 18x+60 Eqn 2
For same cost;
Eqn 1 = Eqn 2

Putting x=2 in Eqn 1

Putting x=2 in Eqn 2

The total cost of the bracelet will be $96.
The number of charms will be 2.
Keywords: equation, addition
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